JPH0536815U - Case for small transformer - Google Patents

Abstract

(57) [Summary] [Purpose] When molding the inside of a small transformer case with resin, etc., only the body 1 and the connector part 5 should be used while the resin, etc. cures.
The number of parts is reduced so that the resin does not leak to the outside from the joint surface. [Structure] In FIG. 1, reference numeral 1 denotes a body made of resin or the like, and a connector portion 5 having an internal terminal portion 7 is fitted to a part of a side surface of the body 1 by a labyrinth structure to be integrated as a case. .

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a case for a small transformer (for example, an ignition coil for an internal combustion engine) formed of resin or the like.

[0002]

[Prior art]

 In FIG. 2 showing a conventional technique, 1 is a body made of resin or the like, and when the connector portion 5 having the input / output terminal 7 on a part of the side surface of the body 1 is molded by the molding resin or the like. A sealant (packing or adhesive, etc.) 10 to prevent the resin from flowing out of the case is inserted and fitted to form a case for a small transformer (hereinafter simply referred to as "case"). ..

Further, in FIG. 3, a connector portion 5 to which an external connector is connected and an internal terminal portion 7 are integrally molded to form a case on a part of a side surface of a body 1 formed of resin or the like. There is.

[0004]

[Problems to be solved by the device]

 In the case of the configuration of FIG. 2 described above, the sealing material 10 is required to prevent the mold resin from leaking from the joint surface between the body 1 and the connector portion 5, and the number of parts is increased.

Further, in the case of the configuration of FIG. 3, the mold for molding the body 1 becomes large, and since the body 1 must be molded and the internal terminal portion 7 must be incorporated at the same time, the manufacturing process is It gets complicated.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, it is sufficient to have a structure in which the resin or the like does not leak to the outside from the joint surface between the body and the connector portion only while the resin or the like for molding the case is cured.

Therefore, in the present invention, the separately molded body and the joint portion of the connector portion are integrated by a labyrinth seal structure.

[0008]

【Example】

 In FIG. 1 showing an embodiment of the present invention, reference numeral 1 denotes a body made of resin or the like, and a connector portion 5 having an internal terminal portion 7 is provided on a part of a side surface of the body 1 at labyrinth joint portions 20 and 22. Inset, this is integrated as a case.

[0009]

[Action]

 With the above configuration, even when the inside of the case formed of the body 1 and the connector portion 5 is molded with resin or the like, the resin or the like can be molded without leaking to the outside of the case while the resin or the like is cured.

[0010]

[Effect of the device]

 In the case having the above-mentioned configuration, the body 1 and the connector section 5 are molded separately as compared with the case in which the body and the connector section are integrated, so that the structure is simple and the molding is easy.

Further, as compared with a case where the sealing material 10 is used to keep the case airtight, the sealing material 10 is not required, so that the number of parts is small and the workability in assembling is improved.

[Brief description of drawings]

FIG. 1 is a case for a small transformer showing an embodiment of the present invention.

FIG. 2 shows an example of a conventional case for a small transformer in which a body and a connector are separately configured.

FIG. 3 shows an example of a conventional case for a small transformer in which a body and a connector are integrally formed.

[Explanation of symbols]

 In the drawings, the same reference numerals indicate the same or corresponding parts. 1 Body 5 Connector 7 Internal Terminal 10 Sealing Material 20, 22 Labyrinth Joint

Claims (1)

[Scope of utility model registration request] 1. A case for a small transformer in which a connector portion having an internal terminal portion is fitted into and integrated with a part of a side surface of a body made of resin or the like by a labyrinth structure.